ASTM International - ASTM B393-18

Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate

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Organization: ASTM International
Publication Date: 1 April 2018
Status: active
Page Count: 6
significance And Use:

13.1 For the purposes of determining compliance with the specified limits for requirements of the properties listed in this specification, an observed value or a calculated value shall be rounded... View More

scope:

1.1 This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate as follows:

1.1.1 R04200-Type 1-Reactor grade unalloyed niobium,

1.1.2 R04210-Type 2-Commercial grade unalloyed niobium,

1.1.3 R04251-Type 3-Reactor grade niobium alloy containing 1 % zirconium,

1.1.4 R04261-Type 4-Commercial grade niobium alloy containing 1 % zirconium, and.

1.1.5 R04220-Type 5-RRR grade pure niobium.

Note 1: This grade of niobium is used in superconducting applications that require the ultra high purity. Because of the high purity the product is conducive to very large grains that can adversely affect formability. It is not recommended for other applications.

1.2 Except for dimensional tolerances in Table 1, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

(A) Tolerance on thickness of sheet over 24 in. (610 mm) wide shall be ±10 % of the thickness.(B) Tolerance on width of sheared sheet shall be ±1/16 in. (±1.6 mm) and on sheared plate shall be ±1/8 in. (±3.2 mm) up to material thickness of 0.375 in. (9.5 mm).

1.3 The following precautionary caveat pertains only to the test methods portion of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

abstract:

This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate. These are reactor grade unalloyed niobium (R04200-Type 1), commercial grade unalloyed niobium... View More

Document History

ASTM B393-18
April 1, 2018
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
1.1 This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: 1.1.1 R04200-Type 1—Reactor grade unalloyed niobium, 1.1.2 R04210-Type...
October 1, 2009
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate (Withdrawn 2018)
1.1 This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: 1.1.1 R04200-Type 1—Reactor grade unalloyed niobium, 1.1.2 R04210-Type...
October 1, 2009
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
1.1 This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: 1.1.1 R04200-Type 1—Reactor grade unalloyed niobium, 1.1.2 R04210-Type...
May 1, 2005
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
1.1 This specification covers five grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: Note 1—Committee B10 has adopted "niobium" as the designation for Element No. 41,...
September 10, 2003
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
1.1 This specification covers four grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: Note 1—Committee B10 has adopted "niobium" as the designation for Element No. 41,...
December 10, 1999
Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate
1.1 This specification covers four grades of wrought niobium and niobium alloy strip, sheet, and plate as follows: Note-Committee B-10 has adopted "niobium" as the designation for Element No. 41,...
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